Carl Fairweather

I'm also getting these white lines. Even if I separate close proximity surfaces. I've tried switching karma cpu/gpu, material types, spec options, etc.
Narrowed it down to the dome light causing issues. I've swapped for a large overhead area light. But that's not always going to be a solution.

Manual driver update worked Thanks for the push to dig a little deeper Jonathan!

I'm on Windows. I normally look at the drivers from the device manager > properties. If I try updating the driver it says I'm up to date.

I did, however, find a 'system information' link from the NVidia control panel. That's telling me version 456.71. So clearly not high enough. I've manually downloaded a 512.15 studio driver. Fingers crossed that'll sort it.